Dec 07 17:05:27.181 INFO testing fast_io-1.2.2 against master#906deae0790bd18681b937fe9a141a3c26cf1855 for pr-56514
Dec 07 17:05:27.181 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-5/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +906deae0790bd18681b937fe9a141a3c26cf1855-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 07 17:05:27.338 INFO [stdout] a611f87de1d7a4fe521ce6f486e6ba6fea71ab929de366951827bd19cfd02cca
Dec 07 17:05:27.340 INFO running `"docker" "start" "-a" "a611f87de1d7a4fe521ce6f486e6ba6fea71ab929de366951827bd19cfd02cca"`
Dec 07 17:05:27.745 INFO [stderr] usermod: no changes
Dec 07 17:05:27.772 INFO [stderr]    Compiling fast_io v1.2.2 (/source)
Dec 07 17:05:28.289 INFO [stderr] warning: variable does not need to be mutable
Dec 07 17:05:28.289 INFO [stderr]   --> src/copy_io.rs:17:13
Dec 07 17:05:28.289 INFO [stderr]    |
Dec 07 17:05:28.289 INFO [stderr] 17 |         let mut buffer = unsafe {
Dec 07 17:05:28.289 INFO [stderr]    |             ----^^^^^^
Dec 07 17:05:28.289 INFO [stderr]    |             |
Dec 07 17:05:28.289 INFO [stderr]    |             help: remove this `mut`
Dec 07 17:05:28.289 INFO [stderr]    |
Dec 07 17:05:28.289 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 07 17:05:28.289 INFO [stderr] 
Dec 07 17:05:28.292 INFO [stderr] warning: variable does not need to be mutable
Dec 07 17:05:28.292 INFO [stderr]   --> src/copy_io.rs:38:17
Dec 07 17:05:28.292 INFO [stderr]    |
Dec 07 17:05:28.292 INFO [stderr] 38 |             let mut buffer = slice::from_raw_parts_mut(
Dec 07 17:05:28.292 INFO [stderr]    |                 ----^^^^^^
Dec 07 17:05:28.292 INFO [stderr]    |                 |
Dec 07 17:05:28.292 INFO [stderr]    |                 help: remove this `mut`
Dec 07 17:05:28.292 INFO [stderr] 
Dec 07 17:05:28.339 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
Dec 07 17:05:28.344 INFO [stderr] su: No module specific data is present
Dec 07 17:05:28.742 INFO running `"docker" "inspect" "a611f87de1d7a4fe521ce6f486e6ba6fea71ab929de366951827bd19cfd02cca"`
Dec 07 17:05:28.870 INFO running `"docker" "rm" "-f" "a611f87de1d7a4fe521ce6f486e6ba6fea71ab929de366951827bd19cfd02cca"`
Dec 07 17:05:28.973 INFO [stdout] a611f87de1d7a4fe521ce6f486e6ba6fea71ab929de366951827bd19cfd02cca
Dec 07 17:05:28.978 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56514/worker-5/master#906deae0790bd18681b937fe9a141a3c26cf1855:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56514/master#906deae0790bd18681b937fe9a141a3c26cf1855:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +906deae0790bd18681b937fe9a141a3c26cf1855-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 07 17:05:29.192 INFO [stdout] f5bb7cfd4d1f8d223c2849bf978729e7279d6498ff32a318683e60edcd0332fa
Dec 07 17:05:29.194 INFO running `"docker" "start" "-a" "f5bb7cfd4d1f8d223c2849bf978729e7279d6498ff32a318683e60edcd0332fa"`
Dec 07 17:05:29.716 INFO [stderr] usermod: no changes
Dec 07 17:05:29.758 INFO [stderr]    Compiling fast_io v1.2.2 (/source)
Dec 07 17:05:30.429 INFO [stderr] warning: variable does not need to be mutable
Dec 07 17:05:30.429 INFO [stderr]   --> src/copy_io.rs:17:13
Dec 07 17:05:30.429 INFO [stderr]    |
Dec 07 17:05:30.429 INFO [stderr] 17 |         let mut buffer = unsafe {
Dec 07 17:05:30.429 INFO [stderr]    |             ----^^^^^^
Dec 07 17:05:30.429 INFO [stderr]    |             |
Dec 07 17:05:30.429 INFO [stderr]    |             help: remove this `mut`
Dec 07 17:05:30.429 INFO [stderr]    |
Dec 07 17:05:30.429 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 07 17:05:30.429 INFO [stderr] 
Dec 07 17:05:30.430 INFO [stderr] warning: variable does not need to be mutable
Dec 07 17:05:30.430 INFO [stderr]   --> src/copy_io.rs:38:17
Dec 07 17:05:30.430 INFO [stderr]    |
Dec 07 17:05:30.430 INFO [stderr] 38 |             let mut buffer = slice::from_raw_parts_mut(
Dec 07 17:05:30.430 INFO [stderr]    |                 ----^^^^^^
Dec 07 17:05:30.430 INFO [stderr]    |                 |
Dec 07 17:05:30.430 INFO [stderr]    |                 help: remove this `mut`
Dec 07 17:05:30.430 INFO [stderr] 
Dec 07 17:05:30.927 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.18s
Dec 07 17:05:30.929 INFO [stderr] su: No module specific data is present
Dec 07 17:05:31.206 INFO running `"docker" "inspect" "f5bb7cfd4d1f8d223c2849bf978729e7279d6498ff32a318683e60edcd0332fa"`
Dec 07 17:05:31.319 INFO running `"docker" "rm" "-f" "f5bb7cfd4d1f8d223c2849bf978729e7279d6498ff32a318683e60edcd0332fa"`
Dec 07 17:05:31.488 INFO [stdout] f5bb7cfd4d1f8d223c2849bf978729e7279d6498ff32a318683e60edcd0332fa